﻿using System;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;

namespace WiiKey {
    class Win32 {
        public struct POINTAPI {
            public int x;
            public int y;
        }

        public struct RECT {
            public int left;
            public int top;
            public int right;
            public int bottom;
        }

        public struct WINDOWPLACEMENT {
            public int length;
            public int flags;
            public int showCmd;
            public POINTAPI ptMinPosition;
            public POINTAPI ptMaxPosition;
            public RECT rcNormalPosition;
        }

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static public extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static public extern bool SetForegroundWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        static public extern bool ShowWindow(IntPtr hWnd, int nCmdShow);

        public const uint MAX_PATH = 260;

        #region Hooks - user32.dll

        /// <summary>
        /// Defines the layout of the MouseHookStruct
        /// </summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct MSLLHOOKSTRUCT {
            public Point Point;
            public int MouseData;
            public int Flags;
            public int Time;
            public int ExtraInfo;
        }

        /// <summary>
        ///  EventArgs class for use as parameters by HookEventHandler delegates
        /// </summary>
        public class HookEventArgs : EventArgs {
            private int _code;
            private IntPtr _wParam;
            private IntPtr _lParam;

            /// <summary>
            /// Initializes a new instance of the HookEventArgs class
            /// </summary>
            /// <param name="code">the hook code</param>
            /// <param name="wParam">hook specific information</param>
            /// <param name="lParam">hook specific information</param>
            public HookEventArgs(int code, IntPtr wParam, IntPtr lParam) {
                _code = code;
                _wParam = wParam;
                _lParam = lParam;
            }

            /// <summary>
            /// The hook code
            /// </summary>
            public int Code {
                get {
                    return _code;
                }
            }

            /// <summary>
            /// A pointer to data
            /// </summary>
            public IntPtr wParam {
                get {
                    return _wParam;
                }
            }

            /// <summary>
            /// A pointer to data
            /// </summary>
            public IntPtr lParam {
                get {
                    return _lParam;
                }
            }
        }

        /// <summary>
        /// Event delegate for use with the HookEventArgs class
        /// </summary>
        public delegate void HookEventHandler(object sender, HookEventArgs e);

        /// <summary>
        /// Defines the various types of hooks that are available in Windows
        /// </summary>
        public enum HookTypes : int {
            WH_JOURNALRECORD = 0,
            WH_JOURNALPLAYBACK = 1,
            WH_KEYBOARD = 2,
            WH_GETMESSAGE = 3,
            WH_CALLWNDPROC = 4,
            WH_CBT = 5,
            WH_SYSMSGFILTER = 6,
            WH_MOUSE = 7,
            WH_HARDWARE = 8,
            WH_DEBUG = 9,
            WH_SHELL = 10,
            WH_FOREGROUNDIDLE = 11,
            WH_CALLWNDPROCRET = 12,
            WH_KEYBOARD_LL = 13,
            WH_MOUSE_LL = 14
        }

        public enum ShellHookMessages {
            HSHELL_WINDOWCREATED = 1,
            HSHELL_WINDOWDESTROYED = 2,
            HSHELL_ACTIVATESHELLWINDOW = 3,
            HSHELL_WINDOWACTIVATED = 4,
            HSHELL_GETMINRECT = 5,
            HSHELL_REDRAW = 6,
            HSHELL_TASKMAN = 7,
            HSHELL_LANGUAGE = 8,
            HSHELL_ACCESSIBILITYSTATE = 11
        }

        public delegate int HookProc(int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll")]
        public static extern IntPtr SetWindowsHookEx(HookTypes hookType, HookProc hookProc, IntPtr hInstance, int nThreadId);

        [DllImport("user32.dll")]
        public static extern int UnhookWindowsHookEx(IntPtr hookHandle);

        [DllImport("user32.dll")]
        public static extern int CallNextHookEx(IntPtr hookHandle, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("user32.dll")]
        public static extern int RegisterShellHookWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern int DeregisterShellHookWindow(IntPtr hWnd);

        #endregion Hooks

        #region System - Kernel32.dll

        [DllImport("kernel32.dll", EntryPoint = "GetLastError", SetLastError = true, ExactSpelling = true, CallingConvention = CallingConvention.StdCall)]
        public static extern Int32 GetLastError();

        #endregion

        #region Windows - user32.dll

        public const int GWL_HWNDPARENT = (-8);
        public const int GWL_EXSTYLE = (-20);
        public const int GWL_STYLE = (-16);
        public const int GCL_HICON = (-14);
        public const int GCL_HICONSM = (-34);
        public const int WM_QUERYDRAGICON = 0x37;
        public const int WM_GETICON = 0x7F;
        public const int WM_SETICON = 0x80;
        public const int ICON_SMALL = 0;
        public const int ICON_BIG = 1;
        public const int SMTO_ABORTIFHUNG = 0x2;
        public const int TRUE = 1;
        public const int FALSE = 0;

        public const int WHITE_BRUSH = 0;
        public const int LTGRAY_BRUSH = 1;
        public const int GRAY_BRUSH = 2;
        public const int DKGRAY_BRUSH = 3;
        public const int BLACK_BRUSH = 4;
        public const int NULL_BRUSH = 5;
        public const int HOLLOW_BRUSH = NULL_BRUSH;
        public const int WHITE_PEN = 6;
        public const int BLACK_PEN = 7;
        public const int NULL_PEN = 8;
        public const int OEM_FIXED_FONT = 10;
        public const int ANSI_FIXED_FONT = 11;
        public const int ANSI_VAR_FONT = 12;
        public const int SYSTEM_FONT = 13;
        public const int DEVICE_DEFAULT_FONT = 14;
        public const int DEFAULT_PALETTE = 15;
        public const int SYSTEM_FIXED_FONT = 16;


        public const int RDW_INVALIDATE = 0x0001;
        public const int RDW_INTERNALPAINT = 0x0002;
        public const int RDW_ERASE = 0x0004;

        public const int RDW_VALIDATE = 0x0008;
        public const int RDW_NOINTERNALPAINT = 0x0010;
        public const int RDW_NOERASE = 0x0020;

        public const int RDW_NOCHILDREN = 0x0040;
        public const int RDW_ALLCHILDREN = 0x0080;

        public const int RDW_UPDATENOW = 0x0100;
        public const int RDW_ERASENOW = 0x0200;

        public const int RDW_FRAME = 0x0400;
        public const int RDW_NOFRAME = 0x0800;



        public enum ShowWindowCmds {
            SW_HIDE = 0,
            SW_SHOWNORMAL = 1,
            SW_NORMAL = 1,
            SW_SHOWMINIMIZED = 2,
            SW_SHOWMAXIMIZED = 3,
            SW_MAXIMIZE = 3,
            SW_SHOWNOACTIVATE = 4,
            SW_SHOW = 5,
            SW_MINIMIZE = 6,
            SW_SHOWMINNOACTIVE = 7,
            SW_SHOWNA = 8,
            SW_RESTORE = 9,
            SW_SHOWDEFAULT = 10,
            SW_FORCEMINIMIZE = 11,
            SW_MAX = 11
        }

        public const int HIDE_WINDOW = 0;
        public const int SHOW_OPENWINDOW = 1;
        public const int SHOW_ICONWINDOW = 2;
        public const int SHOW_FULLSCREEN = 3;
        public const int SHOW_OPENNOACTIVATE = 4;
        public const int SW_PARENTCLOSING = 1;
        public const int SW_OTHERZOOM = 2;
        public const int SW_PARENTOPENING = 3;
        public const int SW_OTHERUNZOOM = 4;

        public const int SWP_NOSIZE = 0x0001;
        public const int SWP_NOMOVE = 0x0002;
        public const int SWP_NOZORDER = 0x0004;
        public const int SWP_NOREDRAW = 0x0008;
        public const int SWP_NOACTIVATE = 0x0010;
        public const int SWP_FRAMECHANGED = 0x0020; /* The frame changed: send WM_NCCALCSIZE */
        public const int SWP_SHOWWINDOW = 0x0040;
        public const int SWP_HIDEWINDOW = 0x0080;
        public const int SWP_NOCOPYBITS = 0x0100;
        public const int SWP_NOOWNERZORDER = 0x0200; /* Don't do owner Z ordering */
        public const int SWP_NOSENDCHANGING = 0x0400;  /* Don't send WM_WINDOWPOSCHANGING */
        public const int SWP_DRAWFRAME = SWP_FRAMECHANGED;
        public const int SWP_NOREPOSITION = SWP_NOOWNERZORDER;
        public const int SWP_DEFERERASE = 0x2000;
        public const int SWP_ASYNCWINDOWPOS = 0x4000;

        public const int HWND_TOP = 0;
        public const int HWND_BOTTOM = 1;
        public const int HWND_TOPMOST = -1;
        public const int HWND_NOTOPMOST = -2;

        public enum PeekMessageFlags {
            PM_NOREMOVE = 0,
            PM_REMOVE = 1,
            PM_NOYIELD = 2
        }

        public enum WindowMessages {
            WM_NULL = 0x0000,
            WM_CREATE = 0x0001,
            WM_DESTROY = 0x0002,
            WM_MOVE = 0x0003,
            WM_SIZE = 0x0005,
            WM_ACTIVATE = 0x0006,
            WM_SETFOCUS = 0x0007,
            WM_KILLFOCUS = 0x0008,
            WM_ENABLE = 0x000A,
            WM_SETREDRAW = 0x000B,
            WM_SETTEXT = 0x000C,
            WM_GETTEXT = 0x000D,
            WM_GETTEXTLENGTH = 0x000E,
            WM_PAINT = 0x000F,
            WM_CLOSE = 0x0010,
            WM_QUERYENDSESSION = 0x0011,
            WM_QUIT = 0x0012,
            WM_QUERYOPEN = 0x0013,
            WM_ERASEBKGND = 0x0014,
            WM_SYSCOLORCHANGE = 0x0015,
            WM_ENDSESSION = 0x0016,
            WM_SHOWWINDOW = 0x0018,
            WM_CTLCOLOR = 0x0019,
            WM_WININICHANGE = 0x001A,
            WM_SETTINGCHANGE = 0x001A,
            WM_DEVMODECHANGE = 0x001B,
            WM_ACTIVATEAPP = 0x001C,
            WM_FONTCHANGE = 0x001D,
            WM_TIMECHANGE = 0x001E,
            WM_CANCELMODE = 0x001F,
            WM_SETCURSOR = 0x0020,
            WM_MOUSEACTIVATE = 0x0021,
            WM_CHILDACTIVATE = 0x0022,
            WM_QUEUESYNC = 0x0023,
            WM_GETMINMAXINFO = 0x0024,
            WM_PAINTICON = 0x0026,
            WM_ICONERASEBKGND = 0x0027,
            WM_NEXTDLGCTL = 0x0028,
            WM_SPOOLERSTATUS = 0x002A,
            WM_DRAWITEM = 0x002B,
            WM_MEASUREITEM = 0x002C,
            WM_DELETEITEM = 0x002D,
            WM_VKEYTOITEM = 0x002E,
            WM_CHARTOITEM = 0x002F,
            WM_SETFONT = 0x0030,
            WM_GETFONT = 0x0031,
            WM_SETHOTKEY = 0x0032,
            WM_GETHOTKEY = 0x0033,
            WM_QUERYDRAGICON = 0x0037,
            WM_COMPAREITEM = 0x0039,
            WM_GETOBJECT = 0x003D,
            WM_COMPACTING = 0x0041,
            WM_COMMNOTIFY = 0x0044,
            WM_WINDOWPOSCHANGING = 0x0046,
            WM_WINDOWPOSCHANGED = 0x0047,
            WM_POWER = 0x0048,
            WM_COPYDATA = 0x004A,
            WM_CANCELJOURNAL = 0x004B,
            WM_NOTIFY = 0x004E,
            WM_INPUTLANGCHANGEREQUEST = 0x0050,
            WM_INPUTLANGCHANGE = 0x0051,
            WM_TCARD = 0x0052,
            WM_HELP = 0x0053,
            WM_USERCHANGED = 0x0054,
            WM_NOTIFYFORMAT = 0x0055,
            WM_CONTEXTMENU = 0x007B,
            WM_STYLECHANGING = 0x007C,
            WM_STYLECHANGED = 0x007D,
            WM_DISPLAYCHANGE = 0x007E,
            WM_GETICON = 0x007F,
            WM_SETICON = 0x0080,
            WM_NCCREATE = 0x0081,
            WM_NCDESTROY = 0x0082,
            WM_NCCALCSIZE = 0x0083,
            WM_NCHITTEST = 0x0084,
            WM_NCPAINT = 0x0085,
            WM_NCACTIVATE = 0x0086,
            WM_GETDLGCODE = 0x0087,
            WM_SYNCPAINT = 0x0088,
            WM_NCMOUSEMOVE = 0x00A0,
            WM_NCLBUTTONDOWN = 0x00A1,
            WM_NCLBUTTONUP = 0x00A2,
            WM_NCLBUTTONDBLCLK = 0x00A3,
            WM_NCRBUTTONDOWN = 0x00A4,
            WM_NCRBUTTONUP = 0x00A5,
            WM_NCRBUTTONDBLCLK = 0x00A6,
            WM_NCMBUTTONDOWN = 0x00A7,
            WM_NCMBUTTONUP = 0x00A8,
            WM_NCMBUTTONDBLCLK = 0x00A9,
            WM_KEYDOWN = 0x0100,
            WM_KEYUP = 0x0101,
            WM_CHAR = 0x0102,
            WM_DEADCHAR = 0x0103,
            WM_SYSKEYDOWN = 0x0104,
            WM_SYSKEYUP = 0x0105,
            WM_SYSCHAR = 0x0106,
            WM_SYSDEADCHAR = 0x0107,
            WM_KEYLAST = 0x0108,
            WM_IME_STARTCOMPOSITION = 0x010D,
            WM_IME_ENDCOMPOSITION = 0x010E,
            WM_IME_COMPOSITION = 0x010F,
            WM_IME_KEYLAST = 0x010F,
            WM_INITDIALOG = 0x0110,
            WM_COMMAND = 0x0111,
            WM_SYSCOMMAND = 0x0112,
            WM_TIMER = 0x0113,
            WM_HSCROLL = 0x0114,
            WM_VSCROLL = 0x0115,
            WM_INITMENU = 0x0116,
            WM_INITMENUPOPUP = 0x0117,
            WM_MENUSELECT = 0x011F,
            WM_MENUCHAR = 0x0120,
            WM_ENTERIDLE = 0x0121,
            WM_MENURBUTTONUP = 0x0122,
            WM_MENUDRAG = 0x0123,
            WM_MENUGETOBJECT = 0x0124,
            WM_UNINITMENUPOPUP = 0x0125,
            WM_MENUCOMMAND = 0x0126,
            WM_CTLCOLORMSGBOX = 0x0132,
            WM_CTLCOLOREDIT = 0x0133,
            WM_CTLCOLORLISTBOX = 0x0134,
            WM_CTLCOLORBTN = 0x0135,
            WM_CTLCOLORDLG = 0x0136,
            WM_CTLCOLORSCROLLBAR = 0x0137,
            WM_CTLCOLORSTATIC = 0x0138,
            WM_MOUSEMOVE = 0x0200,
            WM_LBUTTONDOWN = 0x0201,
            WM_LBUTTONUP = 0x0202,
            WM_LBUTTONDBLCLK = 0x0203,
            WM_RBUTTONDOWN = 0x0204,
            WM_RBUTTONUP = 0x0205,
            WM_RBUTTONDBLCLK = 0x0206,
            WM_MBUTTONDOWN = 0x0207,
            WM_MBUTTONUP = 0x0208,
            WM_MBUTTONDBLCLK = 0x0209,
            WM_MOUSEWHEEL = 0x020A,
            WM_PARENTNOTIFY = 0x0210,
            WM_ENTERMENULOOP = 0x0211,
            WM_EXITMENULOOP = 0x0212,
            WM_NEXTMENU = 0x0213,
            WM_SIZING = 0x0214,
            WM_CAPTURECHANGED = 0x0215,
            WM_MOVING = 0x0216,
            WM_DEVICECHANGE = 0x0219,
            WM_MDICREATE = 0x0220,
            WM_MDIDESTROY = 0x0221,
            WM_MDIACTIVATE = 0x0222,
            WM_MDIRESTORE = 0x0223,
            WM_MDINEXT = 0x0224,
            WM_MDIMAXIMIZE = 0x0225,
            WM_MDITILE = 0x0226,
            WM_MDICASCADE = 0x0227,
            WM_MDIICONARRANGE = 0x0228,
            WM_MDIGETACTIVE = 0x0229,
            WM_MDISETMENU = 0x0230,
            WM_ENTERSIZEMOVE = 0x0231,
            WM_EXITSIZEMOVE = 0x0232,
            WM_DROPFILES = 0x0233,
            WM_MDIREFRESHMENU = 0x0234,
            WM_IME_SETCONTEXT = 0x0281,
            WM_IME_NOTIFY = 0x0282,
            WM_IME_CONTROL = 0x0283,
            WM_IME_COMPOSITIONFULL = 0x0284,
            WM_IME_SELECT = 0x0285,
            WM_IME_CHAR = 0x0286,
            WM_IME_REQUEST = 0x0288,
            WM_IME_KEYDOWN = 0x0290,
            WM_IME_KEYUP = 0x0291,
            WM_MOUSEHOVER = 0x02A1,
            WM_MOUSELEAVE = 0x02A3,
            WM_CUT = 0x0300,
            WM_COPY = 0x0301,
            WM_PASTE = 0x0302,
            WM_CLEAR = 0x0303,
            WM_UNDO = 0x0304,
            WM_RENDERFORMAT = 0x0305,
            WM_RENDERALLFORMATS = 0x0306,
            WM_DESTROYCLIPBOARD = 0x0307,
            WM_DRAWCLIPBOARD = 0x0308,
            WM_PAINTCLIPBOARD = 0x0309,
            WM_VSCROLLCLIPBOARD = 0x030A,
            WM_SIZECLIPBOARD = 0x030B,
            WM_ASKCBFORMATNAME = 0x030C,
            WM_CHANGECBCHAIN = 0x030D,
            WM_HSCROLLCLIPBOARD = 0x030E,
            WM_QUERYNEWPALETTE = 0x030F,
            WM_PALETTEISCHANGING = 0x0310,
            WM_PALETTECHANGED = 0x0311,
            WM_HOTKEY = 0x0312,
            WM_PRINT = 0x0317,
            WM_PRINTCLIENT = 0x0318,
            WM_HANDHELDFIRST = 0x0358,
            WM_HANDHELDLAST = 0x035F,
            WM_AFXFIRST = 0x0360,
            WM_AFXLAST = 0x037F,
            WM_PENWINFIRST = 0x0380,
            WM_PENWINLAST = 0x038F,
            WM_APP = 0x8000,
            WM_USER = 0x0400,
            WM_REFLECT = WM_USER + 0x1c00
        }

        /// <summary>
        /// Defines the style bits that a window can have
        /// </summary>
        public enum WindowStyles : uint {
            WS_BORDER = 0x800000,
            WS_CAPTION = 0xC00000,//               '  WS_BORDER Or WS_DLGFRAME
            WS_CHILD = 0x40000000,
            WS_CHILDWINDOW = (WS_CHILD),
            WS_CLIPCHILDREN = 0x2000000,
            WS_CLIPSIBLINGS = 0x4000000,
            WS_DISABLED = 0x8000000,
            WS_DLGFRAME = 0x400000,
            WS_EX_ACCEPTFILES = 0x10,
            WS_EX_DLGMODALFRAME = 0x1,
            WS_EX_NOPARENTNOTIFY = 0x4,
            WS_EX_TOPMOST = 0x8,
            WS_EX_TRANSPARENT = 0x20,
            WS_EX_TOOLWINDOW = 0x80,
            WS_EX_APPWINDOW = 0x40000,
            WS_GROUP = 0x20000,
            WS_HSCROLL = 0x100000,
            WS_MAXIMIZE = 0x1000000,
            WS_MAXIMIZEBOX = 0x10000,
            WS_MINIMIZE = 0x20000000,
            WS_MINIMIZEBOX = 0x20000,
            WS_OVERLAPPED = 0x0,
            WS_POPUP = 0x80000000,
            WS_SYSMENU = 0x80000,
            WS_TABSTOP = 0x10000,
            WS_THICKFRAME = 0x40000,
            WS_VISIBLE = 0x10000000,
            WS_VSCROLL = 0x200000,
            WS_ICONIC = WS_MINIMIZE,
            WS_POPUPWINDOW = (WS_POPUP | WS_BORDER | WS_SYSMENU),
            WS_SIZEBOX = WS_THICKFRAME,
            WS_TILED = WS_OVERLAPPED,
            WS_OVERLAPPEDWINDOW = (WS_OVERLAPPED | WS_CAPTION | WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX | WS_MAXIMIZEBOX)
        }

        public struct WindowInfo {
            public int size;
            public Rectangle window;
            public Rectangle client;
            public int style;
            public int exStyle;
            public int windowStatus;
            public uint xWindowBorders;
            public uint yWindowBorders;
            public short atomWindowtype;
            public short creatorVersion;
        }

        public struct WindowPlacement {
            public int length;
            public int flags;
            public int showCmd;
            public Point minPosition;
            public Point maxPosition;
            public Rectangle normalPosition;
        }

        public struct Rect {
            public int left;
            public int top;
            public int right;
            public int bottom;

            public int Width {
                get {
                    return right - left;
                }
            }

            public int Height {
                get {
                    return bottom - top;
                }
            }
        }

        public delegate bool EnumWindowEventHandler(IntPtr hWnd, Int32 lParam);

        [DllImport("user32.dll")]
        public static extern int GetWindowModuleFileName(IntPtr hWnd, StringBuilder lpString, int nMaxCount);

        [DllImport("user32.dll")]
        public static extern int SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int X, int Y, int cx, int cy, uint uFlags);

        [DllImport("user32.dll")]
        public static extern bool GetWindowPlacement(IntPtr window, ref WindowPlacement position);

        [DllImport("User32.dll")]
        public static extern int RegisterWindowMessage(string message);

        [DllImport("User32.dll")]
        public static extern void EnumWindows(EnumWindowEventHandler callback, Int32 lParam);

        //		[DllImport("User32.dll")]
        //		public static extern Int32 GetWindowText(IntPtr hWnd, StringBuilder lpString, Int32 nMaxCount);

        [DllImport("User32.dll")]
        public static extern bool IsWindowVisible(IntPtr hWnd);

        [DllImport("User32.dll")]
        public static extern Int32 GetWindow(IntPtr hWnd, Int32 wCmd);

        //		[DllImport("User32.dll")]
        //		public static extern WindowStyles GetWindowLong(IntPtr hWnd, Int32 index);

        [DllImport("User32.dll")]
        public static extern IntPtr GetParent(IntPtr hWnd);

        [DllImport("User32.dll")]
        public static extern int GetClassName(IntPtr hWnd, StringBuilder lpClassName, int nMaxCount);

        [DllImport("User32.dll")]
        public static extern int GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);

        [DllImport("User32.dll")]
        public static extern WindowStyles GetWindowLong(IntPtr hWnd, int index);

        [DllImport("User32.dll")]
        public static extern int SendMessageTimeout(IntPtr hWnd, int uMsg, int wParam, int lParam, int fuFlags, int uTimeout, out int lpdwResult);

        [DllImport("User32.dll")]
        public static extern int GetClassLong(IntPtr hWnd, int index);

        [DllImport("User32.dll")]
        public static extern int GetWindowThreadProcessId(IntPtr hWnd, out int processId);

        [DllImport("User32.dll")]
        public static extern int SendMessage(IntPtr hWnd, int uMsg, IntPtr wParam, IntPtr lParam);

        [DllImport("User32.dll")]
        public static extern int PostMessage(IntPtr hWnd, int uMsg, IntPtr wParam, IntPtr lParam);

        [DllImport("User32.dll")]
        public static extern void SwitchToThisWindow(IntPtr hWnd, int altTabActivated);

        [DllImport("User32.dll")]
        public static extern int ShowWindowAsync(IntPtr hWnd, int command);

        [DllImport("user32.dll")]
        public static extern IntPtr GetDesktopWindow();

        [DllImport("user32.dll")]
        public static extern IntPtr GetForegroundWindow();

        [DllImport("user32.dll")]
        public static extern bool BringWindowToTop(IntPtr window);

        [DllImport("user32.dll")]
        public static extern bool GetWindowInfo(IntPtr hwnd, ref WindowInfo info);

        [DllImport("user32.dll")]
        public static extern IntPtr GetWindowDC(IntPtr hwnd);

        [DllImport("user32.dll")]
        public static extern IntPtr GetDC(IntPtr hwnd);

        [DllImport("user32.dll")]
        public static extern Int32 ReleaseDC(IntPtr hwnd, IntPtr hdc);

        [DllImport("user32.dll")]
        public static extern bool GetWindowRect(IntPtr hwnd, ref Rect rectangle);

        [DllImport("user32.dll")]
        public static extern bool GetClientRect(IntPtr hwnd, ref Rect rectangle);

        [DllImport("user32.dll")]
        public static extern IntPtr WindowFromPoint(Point pt);

        [DllImport("user32.dll")]
        public static extern IntPtr SetCapture(IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern int ReleaseCapture();

        [DllImport("user32.dll")]
        public static extern IntPtr SelectObject(IntPtr hDc, IntPtr hObject);

        [DllImport("user32.dll")]
        public static extern IntPtr GetStockObject(int nObject);

        [DllImport("user32.dll")]
        public static extern int InvalidateRect(IntPtr hWnd, IntPtr lpRect, int bErase);

        [DllImport("user32.dll")]
        public static extern int UpdateWindow(IntPtr hWnd);

        [DllImport("user32.dll")]
        public static extern int RedrawWindow(IntPtr hWnd, IntPtr lprcUpdate, IntPtr hrgnUpdate, uint flags);

        #endregion Windows

        #region GDI - gdi32.dll

        public enum BinaryRasterOperations {
            R2_BLACK = 1,   /*  0       */
            R2_NOTMERGEPEN = 2,   /* DPon     */
            R2_MASKNOTPEN = 3,   /* DPna     */
            R2_NOTCOPYPEN = 4,   /* PN       */
            R2_MASKPENNOT = 5,   /* PDna     */
            R2_NOT = 6,   /* Dn       */
            R2_XORPEN = 7,   /* DPx      */
            R2_NOTMASKPEN = 8,   /* DPan     */
            R2_MASKPEN = 9,   /* DPa      */
            R2_NOTXORPEN = 10,  /* DPxn     */
            R2_NOP = 11,  /* D        */
            R2_MERGENOTPEN = 12,  /* DPno     */
            R2_COPYPEN = 13,  /* P        */
            R2_MERGEPENNOT = 14,  /* PDno     */
            R2_MERGEPEN = 15,  /* DPo      */
            R2_WHITE = 16,  /*  1       */
            R2_LAST = 16
        }

        public enum TernaryRasterOperations {
            SRCCOPY = 0x00CC0020, /* dest = source                   */
            SRCPAINT = 0x00EE0086, /* dest = source OR dest           */
            SRCAND = 0x008800C6, /* dest = source AND dest          */
            SRCINVERT = 0x00660046, /* dest = source XOR dest          */
            SRCERASE = 0x00440328, /* dest = source AND (NOT dest )   */
            NOTSRCCOPY = 0x00330008, /* dest = (NOT source)             */
            NOTSRCERASE = 0x001100A6, /* dest = (NOT src) AND (NOT dest) */
            MERGECOPY = 0x00C000CA, /* dest = (source AND pattern)     */
            MERGEPAINT = 0x00BB0226, /* dest = (NOT source) OR dest     */
            PATCOPY = 0x00F00021, /* dest = pattern                  */
            PATPAINT = 0x00FB0A09, /* dest = DPSnoo                   */
            PATINVERT = 0x005A0049, /* dest = pattern XOR dest         */
            DSTINVERT = 0x00550009, /* dest = (NOT dest)               */
            BLACKNESS = 0x00000042, /* dest = BLACK                    */
            WHITENESS = 0x00FF0062 /* dest = WHITE                    */

        }

        [DllImport("gdi32.dll")]
        public static extern bool BitBlt(IntPtr hdcDst, int xDst, int yDst, int cx, int cy, IntPtr hdcSrc, int xSrc, int ySrc, uint ulRop);

        [DllImport("gdi32.dll")]
        public static extern bool StretchBlt(IntPtr hdcDst, int xDst, int yDst, int cx, int cy, IntPtr hdcSrc, int xSrc, int ySrc, int cxSrc, int cySrc, uint ulRop);

        [DllImport("gdi32.dll")]
        public static extern IntPtr CreateDC(IntPtr lpszDriver, string lpszDevice, IntPtr lpszOutput, IntPtr lpInitData);

        [DllImport("gdi32.dll")]
        public static extern IntPtr DeleteDC(IntPtr hdc);

        #endregion

        #region Shlwapi.dll

        [DllImport("Shlwapi.dll")]
        public static extern string PathGetArgs(string path);

        public static string SafePathGetArgs(string path) {
            try {
                return Win32.PathGetArgs(path);
            } catch (System.Exception) { }
            return string.Empty;
        }

        [DllImport("Shlwapi.dll")]
        public static extern int PathCompactPathEx(
            System.Text.StringBuilder pszOut, /* Address of the string that has been altered */
            System.Text.StringBuilder pszSrc, /* Pointer to a null-terminated string of max length (MAX_PATH) that contains the path to be altered */
            uint cchMax,					  /* Maximum number of chars to be contained in the new string, including the null character. Example: cchMax = 8, then 7 chars will be returned, the last for the null character. */
            uint dwFlags);					  /* Reserved */

        public static string PathCompactPathEx(string source, uint maxChars) {
            StringBuilder pszOut = new StringBuilder((int)Win32.MAX_PATH);
            StringBuilder pszSrc = new StringBuilder(source);

            int result = Win32.PathCompactPathEx(pszOut, pszSrc, maxChars, (uint)0);
            if (result == 1)
                return pszOut.ToString();
            else {
                System.Diagnostics.Debug.WriteLine("Win32.PathCompactPathEx failed to compact the path '" + source + "' down to '" + maxChars + "' characters.");
                return string.Empty;
            }
        }

        #endregion

        #region Hotkeys

        [Flags()]
        public enum HotkeyModifiers {
            MOD_ALT = 0x0001,
            MOD_CONTROL = 0x0002,
            MOD_SHIFT = 0x0004,
            MOD_WIN = 0x0008
        }

        [DllImport("User32")]
        public static extern int RegisterHotKey(IntPtr hWnd, int id, uint modifiers, uint virtualkeyCode);

        [DllImport("User32")]
        public static extern int UnregisterHotKey(IntPtr hWnd, int id);

        [DllImport("Kernel32")]
        public static extern short GlobalAddAtom(string atomName);

        [DllImport("Kernel32")]
        public static extern short GlobalDeleteAtom(short atom);

        #endregion

        [DllImport("User32")]
        public static extern int LockWindowUpdate(IntPtr windowHandle);

        public static short MAKEWORD(byte a, byte b) {
            return ((short)(((byte)(a & 0xff)) | ((short)((byte)(b & 0xff))) << 8));
        }

        public static byte LOBYTE(short a) {
            return ((byte)(a & 0xff));
        }

        public static byte HIBYTE(short a) {
            return ((byte)(a >> 8));
        }

        public static int MAKELONG(short a, short b) {
            return (((int)(a & 0xffff)) | (((int)(b & 0xffff)) << 16));
        }

        public static short HIWORD(int a) {
            return ((short)(a >> 16));
        }

        public static short LOWORD(int a) {
            return ((short)(a & 0xffff));
        }

        [DllImport("Kernel32")]
        public static extern int CopyFile(string source, string destination, int failIfExists);
    }
}
